There are a few perks typically associated with age: diminished concern over the judgement of others, greater self-control, a deeper appreciation of close relationships, and, an end to the acne that plagues most adolescents and twenty-somethings.

The little eight-legged mites called Demodex, which are related to spiders, are apparently drawn to the hair follicles of eyebrows and eyelashes and to the oily pores on your nose, forehead and cheeks. They feed on the oil, or sebum, in your skin, and according to an article in New Scientist, they crawl around your face at night to mate, then crawl back into your pores to lay eggs and die.

The mites are born without an anus, so everything they eat stays in them until they curl up and die in your pores. Their bodies decompose, releasing their full lifespan of waste into your skin. (Yes, you're welcome.)

It appears that people with rosacea have more than the typical load of these rotting bugs. Again TIME.com explains:

Normally, adults have about one or two mites per square centimeter of facial skin, but those with rosacea may have 10 times as many, according to [one of the article's authors]. The stress that often triggers rosacea flare-ups may do so by changing the makeup of your facial oils, making it more delectable to the mites.

The researchers suggest that rosacea arises as a reaction to bacteria in the mites' feces. They're now working to produce antibodies to that bacteria's proteins, which could offer a promising new treatment option for rosacea sufferers.